高技术通讯2016，Vol.26Issue(7)：631-642,12.DOI:10.3772/j.issn.1002-0470.2016.07.003
基于能量自采集的无线传感器网络网关切换机制研究
Research on a gateway switching mechanism based on gateway’ s energy-harvesting for wireless sensor networks
摘要
Abstract
To address the problem of insufficient energy supply of the solar-powered gateway in field wireless sensor net-work system due to weather variations, a multi-gateway switching method based on historically collected energy in-formation and real-time weather information was studied. Firstly, which gateways need to switch and when to switch were determined based on the weather information. Secondly, a gateway selection algorithm, called EasiGS, was presented to make nodes proactively choose the appropriate gateway as the accessing gateway based on the remai-ning work time of the gateway, so as to avoid data loss and to achieve reduced overall energy consumption of the system. Finally, the computational overhead of the gateway selection algorithm was further optimized according to the rate of data transmission, the time for the gateway to recover to work, the hops of shortest path between the can-didate gateway and the node. The simulation results show that the EasiGS can achieve optimal overall power con-sumption of the system. The optimized EasiGS can effectively reduce the amount of computation required by the nodes.关键词
环境监测/太阳能供电网关/网关切换方法/网关选择算法/能量恢复时间/概率统计Key words
environment monitoring/solar powered gateway/gateway switch method/gateway selection algo-rithm/time to restore energy/probability statistics引用本文复制引用
杜文振,陈海明,李栋,崔莉..基于能量自采集的无线传感器网络网关切换机制研究[J].高技术通讯,2016,26(7):631-642,12.基金项目
国家自然科学基金(61303246)和863计划(2014AA093402)资助项目。 （61303246）
